1979-2018年我国玉米品种审定情况回顾与展望
1979年我国开始实施玉米品种审定制度，为更好地了解40年来玉米品种审定情况,本文采集了1979-2018年审定的11803个（次）玉米新品种数据，包含审定单位、审定频次、育种单位、亲本来源、特征特性等。并且将累计推广面积超过4000万亩和年推广面积超过1000万亩的品种进行了汇总，利用这些数据分析了改革开放以来审定玉米新品种的变化趋势、主要品种推广周期等，为玉米育种提供参考。
英文摘要:
In 1979, China began to implement the corn variety approval system, in order to better understand the situation of corn variety approval in the past 40 years. The datum of 11803 new maize varieties authorized from 1979 to 2018 were collected in this article. These datum included the units, the frequency, the parental origin, the characteristics and so on. The varieties with a total promotion area of more than 40 million mu and an annual promotion area of more than 10 million mu were summarized. The changing trend and the spreading cycle of the main maize varieties since the reform and opening up were analyzed by these datum. It will provide reference for maize breeding.
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